Supporting type coal bucket convenient to overhaul

Abstract

The utility model belongs to the technical field of bearing type coal buckets, and provides a bearing type coal bucket convenient to overhaul, which comprises a skirt cylinder, a conical cylinder, a detachable part and a support plate, the bottom of the skirt tube is uniformly provided with the plurality of support plates, the skirt tube is provided with one or more concave notches between two adjacent support plates, and each concave notch of the skirt tube is detachably connected with one detachable part; the top of the conical cylinder is fixedly connected to the middle of the inner wall of the skirt cylinder, and the joint of the conical cylinder and the skirt cylinder is located on the upper portion of the detachable part. The skirt tube is detachable, quality detection of a welding seam at a hidden position is facilitated, and the normal coal storage function of the coal bucket is not affected when the detachable part is disassembled or assembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting coal hoppers, and in particular relates to a supporting coal hopper which is convenient for maintenance. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Supported coal hoppers are often used for coal storage in thermal power plants with a normal output of 8 hours. Supported circular coal hoppers are widely used because of their clear force transmission, simple force bearing and simple appearance. Usually, supported circular coal hoppers are composed of a skirt and a cone. The skirt uses thickened steel plates at the corners and a fixed support is formed by setting a stiffening rib group. The fixed supports are usually 8, 12 or 16 depending on the total weight of the coal hopper storage and the surrounding space.

[0004] The space formed by the skirt, cone and supporting beam structure is narrow, and the connection weld between the skirt and cone is very important. Once it is placed in place during the construction period, it is difficult to check it. It is even more difficult to overhaul it after the power plant is put into operation, unless all the stored materials are emptied, which will affect the normal operation of the power plant and increase time and economic investment. Moreover, even if a problem is found, it is difficult to advance the overhaul work because the space is too small and the space required for maintenance personnel and equipment is limited, which leaves many hidden safety hazards. In recent years, some power plants have caused the coal hopper cone to fall off due to construction quality defects and incomplete later maintenance. Other power plants want to learn from this and plan to thoroughly overhaul key welds and hidden locations, but they are ultimately stopped due to insufficient overhaul space. Utility Model Content

[0005] In order to solve the above-mentioned problem, the utility model proposes a supporting coal hopper which is easy to maintain, wherein a concave notch is provided between two support plates of the skirt, and a detachable part is detachably connected at each concave notch, which not only makes the skirt detachable and facilitates the quality inspection of welds in hidden places, but also the removal or installation of the detachable parts does not affect the normal coal storage function of the coal hopper.

[0006] According to some embodiments, the utility model adopts the following technical solutions:

[0007] In the first aspect, a support-type coal hopper convenient for maintenance is proposed, comprising a skirt, a cone, a detachable part and a support plate;

[0008] A plurality of support plates are evenly arranged at the bottom of the skirt, and one or more concave notches are opened between two adjacent support plates of the skirt, and each concave notch of the skirt is detachably connected to a detachable part;

[0009] The top of the cone is fixedly connected to the middle of the inner wall of the skirt, and the connection between the two is located at the upper part of the detachable part.

[0010] Furthermore, it also includes a vertical tube, the bottom of which is fixedly connected to the top of the skirt tube, and the inner diameters of the vertical tube and the skirt tube are equal.

[0011] Furthermore, it also includes a connecting piece, which is a combination of a cylinder on the top and an inverted cone on the bottom. The outer surface of the cylinder of the connecting piece is welded to the inner wall of the skirt, and the outer wall of the inverted cone of the connecting piece is welded to the inner wall of the cone.

[0012] Furthermore, one or more opening handles are provided on the outer wall of the detachable part.

[0013] Furthermore, the detachable part has the same shape as the concave notch, and the size of the detachable part is larger than the size of the concave notch.

[0014] Furthermore, a first annular stiffening rib is fixed on the outer wall of the skirt, the first annular stiffening rib is in a circular ring shape, the outer wall of the skirt is welded to the inner side of the first annular stiffening rib, the first annular stiffening rib is parallel to the support plate, and the connection between the first annular stiffening rib and the skirt and the cone is located on the same plane;

[0015] A second annular stiffening rib is fixed to the outer side of the first annular stiffening rib, the second annular stiffening rib is in the shape of a hollow cylinder, the outer side of the first annular stiffening rib is welded to the middle of the inner wall of the second annular stiffening rib, the first annular stiffening rib and the second annular stiffening rib are perpendicular, and the second annular stiffening rib is coaxial with the skirt.

[0016] Furthermore, a plurality of upper stiffening ribs are fixedly connected to the outer wall of the skirt, and the upper stiffening ribs are arranged above the first annular stiffening ribs, and the upper stiffening ribs are also fixedly connected to the first annular stiffening ribs and the second annular stiffening ribs.

[0017] Furthermore, a plurality of first lower stiffening ribs are fixedly connected to the outer wall of the skirt, the first lower stiffening ribs are arranged below the first annular stiffening ribs and above the support plate, and the first lower stiffening ribs are also fixedly connected to the first annular stiffening ribs, the second annular stiffening ribs and the support plate.

[0018] Furthermore, a plurality of second lower stiffening ribs are fixedly connected to the outer wall of the skirt, the second lower stiffening ribs are arranged below the first annular stiffening ribs and above the detachable parts, and the second lower stiffening ribs are also fixedly connected to the first annular stiffening ribs and the second annular stiffening ribs.

[0019] Furthermore, a plurality of second internal stiffening ribs are fixedly connected to the inner wall of the detachable component;

[0020] A plurality of first internal stiffening ribs are fixedly connected to the inner wall of the skirt, and the first internal stiffening ribs are also fixedly connected to the outer wall of the cone and the top surface of the support plate.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model provides a supporting coal hopper which is easy to maintain, wherein a concave notch is provided between two support plates of a skirt, and a detachable part is detachably connected at each concave notch, so that the skirt is detachable, and it is convenient to apply welds during construction and installation, and to detect weld quality in hidden places, thereby eliminating potential safety hazards caused by quality problems of important welds.

[0023] The utility model provides a supporting coal hopper which is easy to maintain, wherein a concave notch is provided between two support plates of a skirt tube, and a detachable part is detachably connected at each concave notch, and removal or installation of the detachable part does not affect the normal coal storage function of the coal hopper, that is, a plurality of fixed supports of a spatially connected arch type can independently support the coal hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 This is a schematic diagram of the overall structure of a support-type coal hopper that is easy to maintain in the utility model;

[0026] Figure 2 It is a top view of a support type coal hopper which is convenient for maintenance according to the utility model;

[0027] Figure 3 It is a schematic diagram of the embedded parts at the coal hopper support of the utility model;

[0028] Figure 4 The utility model Figure 2 A cross-sectional view of the 1-1 section plane;

[0029] Figure 5 The utility model Figure 2 A cross-sectional view of the 2-2 section plane;

[0030] Figure 6 The utility model Figure 2 A cross-sectional view of the 3-3 section plane;

[0031] Figure 7 It is a group tube expansion diagram of the utility model;

[0032] Figure 8 It is a schematic diagram of a detachable part provided between the support plates of the utility model;

[0033] Fig. 9 It is a schematic diagram of a plurality of detachable parts arranged between the support plates of the utility model;

[0034] Fig.10 It is a schematic diagram of the opening handle of the utility model;

[0035] Fig.11 It is a schematic diagram of the upper stiffening rib of the utility model;

[0036] Fig.12 It is a schematic diagram of the first lower stiffening rib of the utility model;

[0037] Fig.13 is a schematic diagram of a first internal stiffening rib of the utility model;

[0038] Fig.14 It is a schematic diagram of the second internal stiffening rib of the utility model. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0040] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the term "comprising" is used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] In the present invention, terms such as "upper", "vertical", "horizontal", "upward", "downward" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0043] In the present invention, terms such as "fixed" and "fixed" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable. Relevant scientific research or technical personnel in this field can determine the specific meaning of the above terms in the present invention according to specific circumstances, and they cannot be understood as limiting the present invention.

[0044] This embodiment provides a supported coal hopper that is easy to maintain.

[0045] This embodiment provides a support type coal hopper that is easy to repair, such as Figure 1 and Figure 2 As shown, it includes: a vertical tube 1, a skirt tube 2, a cone tube 3, a detachable part 4, a support plate 15, and a connecting part.

[0046] like Figure 4 As shown, the vertical tube 1 is formed by rolling and welding steel, and is a hollow cylinder with no bottom at both ends; the skirt tube 2 is formed by rolling and welding steel, and is a hollow cylinder with no bottom at both ends. The inner diameters of the vertical tube 1 and the skirt tube 2 are equal, and the outer diameter of the vertical tube 1 is smaller than the outer diameter of the skirt tube 2. The bottom of the vertical tube 1 and the top of the skirt tube 2 are welded, and the welding method can be single-side groove welding or double-side groove welding.

[0047] like Figure 4 As shown, the connecting piece is a combination of a hollow truncated cone and a cylinder, with the cylinder on the top and the inverted truncated cone on the bottom, and the two are coaxial, the maximum diameter of the inverted truncated cone is equal to the diameter of the cylinder, and is equal to the inner diameter of the skirt 2. The outer surface of the cylinder is welded to the inner wall of the skirt 2, and the outer wall of the inverted truncated cone is welded to the inner wall of the cone 3.

[0048] like Figure 4 As shown, the cone 3 is formed by rolling and welding steel, and is a hollow inverted truncated cone, and the maximum diameter of the cone 3 is equal to the inner diameter of the skirt 2. The outer wall of the top of the cone 3 is welded to the inner wall of the vertical tube 1. The bottom of the cone 3 and the bottom of the skirt 2 are located on the same plane.

[0049] The vertical tube 1, the skirt tube 2, the connecting piece and the cone tube 3 form a combined space with a cylinder on the top and an inverted truncated cone on the bottom for containing piled materials, feeding materials at the top and discharging materials at the bottom.

[0050] like Figure 8 and Fig. 9 As shown, a plurality of rectangular support plates 15 are uniformly welded to the bottom of the skirt 2, and one or more concave notches are provided between two adjacent support plates 15. The bottom of the skirt 2 is located in the middle of the support plates 15.

[0051] As an implementation manner, the length of the support plate 15 is the shortest distance between two concave notches adjacent to the support plate.

[0052] The detachable part 4 is fixed to the concave notch of the skirt 2 by connecting bolts. The detachable part 4 can be assembled and disassembled by connecting bolts. The detachable part 4 has the same spatial curvature as the skirt 2, and the detachable part 4 and the skirt 2 can form a complete cylinder in space.

[0053] The detachable part 4 is consistent in shape with the concave notch, and the size of the detachable part 4 is slightly larger than the concave notch, that is, the linear shape of the concave notch is basically consistent with the linear shape of the detachable part 4, and the partially overlapping area is connected by a connecting bolt 19. The boundary between the detachable part 4 and the concave notch is in an elliptical arc shape, an arch shape or a circular arc shape, and a plurality of dispersed bolt holes are provided at the connection between the detachable part 4 and the skirt 2 for connecting the bolt holes.

[0054] like Figure 7 As shown, the expanded view of the skirt 2 is a rectangle with multiple concave notches, and the space is a cylindrical surface. A concave notch is opened between two adjacent support plates 15, and the concave notch is set between the support plates 15, and a certain distance from the fixed support, such as 300mm on each side. Multiple concave notches arranged at intervals and the fixed support form a spatial arch in space. Bolt holes are set on the skirt 2 near the concave notches, and the opening position corresponds to the detachable part 4, so as to connect the bolts through the holes.

[0055] There are multiple connecting bolts at each concave notch, and each detachable area forms a bolt group. The connecting bolts connect the skirt 2 and the detachable part 4 through the bolt holes.

[0056] like Figure 5 As shown, the bottom of the detachable part 4 is fixedly connected with a bottom connecting plate 16. The longitudinal sections of the detachable part 4 and the bottom connecting plate 16 are L-shaped, and the bottom connecting plate 16 is fixed to the outer wall of the detachable part 4.

[0057] The support plate 15 is connected (welded) to the embedded parts (embedded parts at the coal hopper support) at the top of the supporting beam (or the pier on the supporting beam), and the other areas of the skirt 2 and the lower edge of the detachable part 4 area (bottom connecting plate 16) are provided with asphalt paste caulking 20 (the caulking seam width can be 30 mm) with the supporting beam (or floor slab or water retaining edge) to form flexible contact.

[0058] like Figure 8 , Fig. 9 and Fig.10 As shown, one or more opening handles 21 are provided on the outer surface of the detachable part 4 to facilitate the assembly and disassembly of the detachable part 4 .

[0059] like Figure 4 As shown, the skirt 2 above the support plate 15 is a region with dense stiffening ribs.

[0060] like Figure 3 As shown, 8 or more densely packed stiffening rib areas are arranged on the skirt 2 to form a fixed support, which is responsible for transferring the stockpile load carried by the cone 3 and the vertical tube 1 to the supporting beam.

[0061] like Figure 2 and Figure 4As shown, a first annular stiffening rib 10 is fixed on the outer wall of the skirt 2 and welded to the inner side of the first annular stiffening rib 10. The first annular stiffening rib 10 is annular, parallel to the support plate 15, and located on the same plane as the connection between the skirt 2 and the cone 3.

[0062] like Figure 2 and Figure 4 As shown, a second annular stiffening rib 11 is fixed to the outer side of the first annular stiffening rib 10, the second annular stiffening rib 11 is in a hollow cylindrical shape, and the outer side of the first annular stiffening rib 10 is welded to the middle of the inner wall of the second annular stiffening rib 11. The first annular stiffening rib 10 and the second annular stiffening rib 11 are perpendicular, and the second annular stiffening rib 11 is coaxial with the skirt 2.

[0063] like Figure 4 As shown, a plurality of (at least 3) upper stiffening ribs 12 are arranged above the support plate 15 , between the outer wall of the skirt 2 , the top surface of the first annular stiffening rib 10 and the inner wall of the second annular stiffening rib 11 .

[0064] like Figure 5 and Figure 6 As shown, a plurality of upper stiffening ribs 12 are arranged above the detachable part 4, between the outer wall of the skirt 2, the top surface of the first annular stiffening rib 10 and the inner wall of the second annular stiffening rib 11. The distance between the upper stiffening ribs 12 above the detachable part 4 is greater than the distance between the upper stiffening ribs 12 above the support plate 15.

[0065] like Fig.11 As shown, the upper stiffening rib 12 is a pentagon with three adjacent right angles. The edge welded to the inner wall of the second annular stiffening rib 11 is half the height of the second annular stiffening rib 11, the length of the edge welded to the outer wall of the skirt 2 is greater than the length of the edge welded to the inner wall of the second annular stiffening rib 11, and the length of the edge welded to the top surface of the first annular stiffening rib 10 is the difference between the radii of the inner and outer concentric circles of the first annular stiffening rib 10. The right angles between the edge welded to the outer wall of the skirt 2 and the edge welded to the top surface of the first annular stiffening rib 10 are chamfered, and the right angles between the edge welded to the inner wall of the second annular stiffening rib 11 and the edge welded to the top surface of the first annular stiffening rib 10 are chamfered.

[0066] like Figure 4 As shown, above the support plate 15, a plurality of (at least 3) reinforcing ribs are arranged between the outer wall of the skirt 2, the bottom surface of the first annular stiffening rib 10, the inner wall of the second annular stiffening rib 11 and the top surface of the support plate 15.

[0067] First lower stiffening ribs 13. Each first lower stiffening rib 13 and one of the upper stiffening ribs 12 are located on the same plane.

[0068] like Fig.12As shown, the first lower stiffening rib 13 is a pentagon with three adjacent right angles. The side welded to the inner wall of the second annular stiffening rib 11 is half the height of the second annular stiffening rib 11, the length of the side welded to the outer wall of the skirt 2 (equal to the distance from the first annular stiffening rib 10 to the support plate 15) is greater than the length of the side welded to the inner wall of the second annular stiffening rib 11, the length of the side welded to the bottom surface of the first annular stiffening rib 10 is the difference between the radii of the inner and outer concentric circles of the first annular stiffening rib 10, and the side welded to the top surface of the support plate 15 is half the width of the support plate 15. The right angles between the edges welded to the outer wall of the skirt 2 and the edges welded to the bottom surface of the first annular stiffening rib 10 are chamfered, the right angles between the edges welded to the inner wall of the second annular stiffening rib 11 and the edges welded to the bottom surface of the first annular stiffening rib 10 are chamfered, and the right angles between the edges welded to the outer wall of the skirt 2 and the edges welded to the top surface of the support plate 15 are chamfered.

[0069] like Figure 4 As shown, above the support plate 15, a plurality of (at least 3) first internal stiffening ribs 14 are arranged between the inner wall of the skirt 2, the outer wall of the cone 3, and the top surface of the support plate 15. Each first internal stiffening rib 14 and one of the upper stiffening ribs 12 are located on the same plane.

[0070] like Fig.13 As shown, the first internal stiffening rib 14 is a pentagon with three right angles. The edge welded to the top surface of the support plate 15 is half the width of the support plate 15. Both ends of the edge welded to the inner wall of the skirt 2 are right angles, and one end of the edge welded to the outer wall of the cone 3 is a right angle.

[0071] like Figure 5 and Figure 6 As shown, above the detachable part 4, a plurality of second lower stiffening ribs 17 are arranged between the outer wall of the skirt 2, the bottom surface of the first annular stiffening rib 10 and the inner wall of the second annular stiffening rib 11. Each second lower stiffening rib 17 and one of the upper stiffening ribs 12 are located on the same plane.

[0072] The second lower stiffening rib 17 is a pentagon with three adjacent right angles. The side welded to the inner wall of the second annular stiffening rib 11 is half the height of the second annular stiffening rib 11, the length of the side welded to the outer wall of the skirt 2 (equal to the distance from the first annular stiffening rib 10 to the detachable part 4) is greater than the length of the side welded to the inner wall of the second annular stiffening rib 11, and the length of the side welded to the bottom surface of the first annular stiffening rib 10 is the difference between the radii of the inner and outer concentric circles of the first annular stiffening rib 10. The right angles between the side welded to the outer wall of the skirt 2 and the side welded to the bottom surface of the first annular stiffening rib 10 are chamfered, and the right angles between the side welded to the inner wall of the second annular stiffening rib 11 and the side welded to the bottom surface of the first annular stiffening rib 10 are chamfered.

[0073] like Figure 5 As shown, a plurality of (at least 3) second internal stiffening ribs 18 are arranged on the inner wall of the detachable part 4. Each second internal stiffening rib 18 and one of the upper stiffening ribs 12 are located on the same plane.

[0074] like Fig.14 As shown, the second internal stiffening rib 18 is a pentagon with three adjacent right angles. Both ends of the side welded to the inner wall of the skirt 2 are right angles, both ends of the bottom side are also right angles, and the right angle between the side welded to the inner wall of the skirt 2 and the bottom side is chamfered.

[0075] like Figure 6 As shown, the opening handle is arranged on the outer wall of the detachable part 4 , and the second internal stiffening rib 18 is not arranged on the inner wall of the detachable part 4 .

[0076] The first annular stiffening rib 10 is an annular horizontal steel plate with a thickness of 20 mm; the second annular stiffening rib 11 is an annular vertical steel plate with a thickness of 20 mm; the upper stiffening rib 12, the first lower stiffening rib 13, the first internal stiffening rib 14, the second lower stiffening rib 17, the second internal stiffening rib 18, etc. are cut and trimmed from steel plates, and the thickness is usually about 20 mm; the bottom connecting plate 16 is 8-segment annular horizontal steel plate with a thickness of 20 mm; the stiffening ribs are welded to the vertical cylinder and the conical cylinder.

[0077] Fixed supports, skirts, cones, connecting bolts, stiffening ribs, etc. together form a cylindrical (conical) silo to realize functions such as storage, feeding, and discharging.

[0078] During normal material storage, the detachable parts are tightly connected to the skirt through connecting bolts, and the fixed support, skirt and detachable parts form a whole and work together.

[0079] During maintenance, unscrew the connecting bolts, open the handle, remove the detachable parts, inspect the hidden welds and the parent material, and perform reinforcement work such as re-painting with anti-corrosion paint and re-welding of welds. At this time, the coal hopper can still store coal normally. During maintenance, it is best to disassemble and assemble the hopper in intervals by skipping the arches. After inspecting one part, install and reset the detachable parts one part. When disassembling and assembling at the same time, multiple fixed supports of the space arch can still independently support the coal hopper and the internal storage.

[0080] The present embodiment provides a support-type coal hopper that is easy to maintain, and the skirt portion is detachable, which facilitates the application of welds during construction and installation, and facilitates the inspection of weld quality in hidden locations, thereby eliminating potential safety hazards caused by important weld quality problems.

[0081] The present embodiment provides a supported coal hopper that is easy to maintain, which enables inspection of welds in hidden locations during operation without completely emptying the internal storage material. The welds or base materials in hidden locations and locations that are difficult to inspect can be inspected and repaired, eliminating potential safety hazards during operation, avoiding sudden accidents due to inadequate maintenance, and even avoiding property losses and grid shocks caused by power plant shutdowns.

[0082] The embodiment provides a support type coal hopper that is easy to maintain, and the detachable parts can be replaced, so that some parts can be updated to improve the overall practical life. After disassembly, the anti-corrosion coating in the hidden part can be inspected and repaired, thereby increasing and extending the service life of the main body structure.

[0083] This embodiment provides a support-type coal hopper that is easy to maintain. The removal or installation of the detachable part does not affect the normal coal storage function of the coal hopper, that is, the spatial arch-type multiple fixed supports can independently support the coal hopper.

[0084] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A support type coal hopper which is easy to maintain, characterized in that: It includes skirt, cone, detachable parts and support plate; A plurality of support plates are evenly arranged at the bottom of the skirt, and one or more concave notches are opened between two adjacent support plates of the skirt, and each concave notch of the skirt is detachably connected to a detachable part; The top of the cone is fixedly connected to the middle of the inner wall of the skirt, and the connection between the two is located at the upper part of the detachable part.

2. A support type coal hopper that is easy to maintain according to claim 1, characterized in that: It also includes a vertical tube, the bottom of which is fixedly connected to the top of the skirt tube, and the inner diameters of the vertical tube and the skirt tube are equal.

3. The support type coal hopper for easy maintenance according to claim 1, characterized in that: It also includes a connecting piece, which is a combination of a cylinder on the top and an inverted cone on the bottom. The outer surface of the cylinder of the connecting piece is welded to the inner wall of the skirt, and the outer wall of the inverted cone of the connecting piece is welded to the inner wall of the cone.

4. The support type coal hopper for easy maintenance according to claim 1, characterized in that: One or more opening handles are arranged on the outer wall of the detachable part.

5. The support type coal hopper for easy maintenance according to claim 1, characterized in that: The detachable part has the same shape as the concave notch, and the size of the detachable part is larger than the size of the concave notch.

6. The support type coal hopper for easy maintenance according to claim 1, characterized in that: A first annular stiffening rib is fixed on the outer wall of the skirt, the first annular stiffening rib is in a circular ring shape, the outer wall of the skirt is welded to the inner side of the first annular stiffening rib, the first annular stiffening rib is parallel to the support plate, and the connection between the first annular stiffening rib and the skirt and the cone is located on the same plane; A second annular stiffening rib is fixed to the outer side of the first annular stiffening rib, the second annular stiffening rib is in the shape of a hollow cylinder, the outer side of the first annular stiffening rib is welded to the middle of the inner wall of the second annular stiffening rib, the first annular stiffening rib and the second annular stiffening rib are perpendicular, and the second annular stiffening rib is coaxial with the skirt.

7. The support type coal hopper for easy maintenance according to claim 6, characterized in that: A plurality of upper stiffening ribs are fixedly connected to the outer wall of the skirt, and the upper stiffening ribs are arranged above the first annular stiffening ribs, and the upper stiffening ribs are also fixedly connected to the first annular stiffening ribs and the second annular stiffening ribs.

8. The support type coal hopper for easy maintenance according to claim 6, characterized in that: A plurality of first lower stiffening ribs are fixedly connected to the outer wall of the skirt, the first lower stiffening ribs are arranged below the first annular stiffening ribs and above the support plate, and the first lower stiffening ribs are also fixedly connected to the first annular stiffening ribs, the second annular stiffening ribs and the support plate.

9. The support type coal hopper for easy maintenance according to claim 6, characterized in that: A plurality of second lower stiffening ribs are fixedly connected to the outer wall of the skirt, the second lower stiffening ribs are arranged below the first annular stiffening ribs and above the detachable part, and the second lower stiffening ribs are also fixedly connected to the first annular stiffening ribs and the second annular stiffening ribs.

10. The support type coal hopper for easy maintenance according to claim 1, characterized in that: A plurality of second internal stiffening ribs are fixedly connected to the inner wall of the detachable component; A plurality of first internal stiffening ribs are fixedly connected to the inner wall of the skirt, and the first internal stiffening ribs are also fixedly connected to the outer wall of the cone and the top surface of the support plate.

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